efivars: explicitly calculate length of VariableName
[linux-2.6.git] / drivers / bluetooth / btmrvl_debugfs.c
1 /**
2  * Marvell Bluetooth driver: debugfs related functions
3  *
4  * Copyright (C) 2009, Marvell International Ltd.
5  *
6  * This software file (the "File") is distributed by Marvell International
7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8  * (the "License").  You may use, redistribute and/or modify this File in
9  * accordance with the terms and conditions of the License, a copy of which
10  * is available by writing to the Free Software Foundation, Inc.,
11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13  *
14  *
15  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
17  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
18  * this warranty disclaimer.
19  **/
20
21 #include <linux/debugfs.h>
22 #include <linux/slab.h>
23
24 #include <net/bluetooth/bluetooth.h>
25 #include <net/bluetooth/hci_core.h>
26
27 #include "btmrvl_drv.h"
28
29 struct btmrvl_debugfs_data {
30         struct dentry *config_dir;
31         struct dentry *status_dir;
32
33         /* config */
34         struct dentry *psmode;
35         struct dentry *pscmd;
36         struct dentry *hsmode;
37         struct dentry *hscmd;
38         struct dentry *gpiogap;
39         struct dentry *hscfgcmd;
40
41         /* status */
42         struct dentry *curpsmode;
43         struct dentry *hsstate;
44         struct dentry *psstate;
45         struct dentry *txdnldready;
46 };
47
48 static ssize_t btmrvl_hscfgcmd_write(struct file *file,
49                         const char __user *ubuf, size_t count, loff_t *ppos)
50 {
51         struct btmrvl_private *priv = file->private_data;
52         char buf[16];
53         long result, ret;
54
55         memset(buf, 0, sizeof(buf));
56
57         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
58                 return -EFAULT;
59
60         ret = strict_strtol(buf, 10, &result);
61         if (ret)
62                 return ret;
63
64         priv->btmrvl_dev.hscfgcmd = result;
65
66         if (priv->btmrvl_dev.hscfgcmd) {
67                 btmrvl_prepare_command(priv);
68                 wake_up_interruptible(&priv->main_thread.wait_q);
69         }
70
71         return count;
72 }
73
74 static ssize_t btmrvl_hscfgcmd_read(struct file *file, char __user *userbuf,
75                                                 size_t count, loff_t *ppos)
76 {
77         struct btmrvl_private *priv = file->private_data;
78         char buf[16];
79         int ret;
80
81         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
82                                                 priv->btmrvl_dev.hscfgcmd);
83
84         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
85 }
86
87 static const struct file_operations btmrvl_hscfgcmd_fops = {
88         .read   = btmrvl_hscfgcmd_read,
89         .write  = btmrvl_hscfgcmd_write,
90         .open   = simple_open,
91         .llseek = default_llseek,
92 };
93
94 static ssize_t btmrvl_psmode_write(struct file *file, const char __user *ubuf,
95                                                 size_t count, loff_t *ppos)
96 {
97         struct btmrvl_private *priv = file->private_data;
98         char buf[16];
99         long result, ret;
100
101         memset(buf, 0, sizeof(buf));
102
103         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
104                 return -EFAULT;
105
106         ret = strict_strtol(buf, 10, &result);
107         if (ret)
108                 return ret;
109
110         priv->btmrvl_dev.psmode = result;
111
112         return count;
113 }
114
115 static ssize_t btmrvl_psmode_read(struct file *file, char __user *userbuf,
116                                                 size_t count, loff_t *ppos)
117 {
118         struct btmrvl_private *priv = file->private_data;
119         char buf[16];
120         int ret;
121
122         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
123                                                 priv->btmrvl_dev.psmode);
124
125         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
126 }
127
128 static const struct file_operations btmrvl_psmode_fops = {
129         .read   = btmrvl_psmode_read,
130         .write  = btmrvl_psmode_write,
131         .open   = simple_open,
132         .llseek = default_llseek,
133 };
134
135 static ssize_t btmrvl_pscmd_write(struct file *file, const char __user *ubuf,
136                                                 size_t count, loff_t *ppos)
137 {
138         struct btmrvl_private *priv = file->private_data;
139         char buf[16];
140         long result, ret;
141
142         memset(buf, 0, sizeof(buf));
143
144         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
145                 return -EFAULT;
146
147         ret = strict_strtol(buf, 10, &result);
148         if (ret)
149                 return ret;
150
151         priv->btmrvl_dev.pscmd = result;
152
153         if (priv->btmrvl_dev.pscmd) {
154                 btmrvl_prepare_command(priv);
155                 wake_up_interruptible(&priv->main_thread.wait_q);
156         }
157
158         return count;
159
160 }
161
162 static ssize_t btmrvl_pscmd_read(struct file *file, char __user *userbuf,
163                                                 size_t count, loff_t *ppos)
164 {
165         struct btmrvl_private *priv = file->private_data;
166         char buf[16];
167         int ret;
168
169         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.pscmd);
170
171         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
172 }
173
174 static const struct file_operations btmrvl_pscmd_fops = {
175         .read = btmrvl_pscmd_read,
176         .write = btmrvl_pscmd_write,
177         .open = simple_open,
178         .llseek = default_llseek,
179 };
180
181 static ssize_t btmrvl_gpiogap_write(struct file *file, const char __user *ubuf,
182                                                 size_t count, loff_t *ppos)
183 {
184         struct btmrvl_private *priv = file->private_data;
185         char buf[16];
186         long result, ret;
187
188         memset(buf, 0, sizeof(buf));
189
190         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
191                 return -EFAULT;
192
193         ret = strict_strtol(buf, 16, &result);
194         if (ret)
195                 return ret;
196
197         priv->btmrvl_dev.gpio_gap = result;
198
199         return count;
200 }
201
202 static ssize_t btmrvl_gpiogap_read(struct file *file, char __user *userbuf,
203                                                 size_t count, loff_t *ppos)
204 {
205         struct btmrvl_private *priv = file->private_data;
206         char buf[16];
207         int ret;
208
209         ret = snprintf(buf, sizeof(buf) - 1, "0x%x\n",
210                                                 priv->btmrvl_dev.gpio_gap);
211
212         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
213 }
214
215 static const struct file_operations btmrvl_gpiogap_fops = {
216         .read   = btmrvl_gpiogap_read,
217         .write  = btmrvl_gpiogap_write,
218         .open   = simple_open,
219         .llseek = default_llseek,
220 };
221
222 static ssize_t btmrvl_hscmd_write(struct file *file, const char __user *ubuf,
223                                                 size_t count, loff_t *ppos)
224 {
225         struct btmrvl_private *priv = file->private_data;
226         char buf[16];
227         long result, ret;
228
229         memset(buf, 0, sizeof(buf));
230
231         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
232                 return -EFAULT;
233
234         ret = strict_strtol(buf, 10, &result);
235         if (ret)
236                 return ret;
237
238         priv->btmrvl_dev.hscmd = result;
239         if (priv->btmrvl_dev.hscmd) {
240                 btmrvl_prepare_command(priv);
241                 wake_up_interruptible(&priv->main_thread.wait_q);
242         }
243
244         return count;
245 }
246
247 static ssize_t btmrvl_hscmd_read(struct file *file, char __user *userbuf,
248                                                 size_t count, loff_t *ppos)
249 {
250         struct btmrvl_private *priv = file->private_data;
251         char buf[16];
252         int ret;
253
254         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hscmd);
255
256         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
257 }
258
259 static const struct file_operations btmrvl_hscmd_fops = {
260         .read   = btmrvl_hscmd_read,
261         .write  = btmrvl_hscmd_write,
262         .open   = simple_open,
263         .llseek = default_llseek,
264 };
265
266 static ssize_t btmrvl_hsmode_write(struct file *file, const char __user *ubuf,
267                                                 size_t count, loff_t *ppos)
268 {
269         struct btmrvl_private *priv = file->private_data;
270         char buf[16];
271         long result, ret;
272
273         memset(buf, 0, sizeof(buf));
274
275         if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
276                 return -EFAULT;
277
278         ret = strict_strtol(buf, 10, &result);
279         if (ret)
280                 return ret;
281
282         priv->btmrvl_dev.hsmode = result;
283
284         return count;
285 }
286
287 static ssize_t btmrvl_hsmode_read(struct file *file, char __user * userbuf,
288                                                 size_t count, loff_t *ppos)
289 {
290         struct btmrvl_private *priv = file->private_data;
291         char buf[16];
292         int ret;
293
294         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->btmrvl_dev.hsmode);
295
296         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
297 }
298
299 static const struct file_operations btmrvl_hsmode_fops = {
300         .read   = btmrvl_hsmode_read,
301         .write  = btmrvl_hsmode_write,
302         .open   = simple_open,
303         .llseek = default_llseek,
304 };
305
306 static ssize_t btmrvl_curpsmode_read(struct file *file, char __user *userbuf,
307                                                 size_t count, loff_t *ppos)
308 {
309         struct btmrvl_private *priv = file->private_data;
310         char buf[16];
311         int ret;
312
313         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->psmode);
314
315         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
316 }
317
318 static const struct file_operations btmrvl_curpsmode_fops = {
319         .read   = btmrvl_curpsmode_read,
320         .open   = simple_open,
321         .llseek = default_llseek,
322 };
323
324 static ssize_t btmrvl_psstate_read(struct file *file, char __user * userbuf,
325                                                 size_t count, loff_t *ppos)
326 {
327         struct btmrvl_private *priv = file->private_data;
328         char buf[16];
329         int ret;
330
331         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->ps_state);
332
333         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
334 }
335
336 static const struct file_operations btmrvl_psstate_fops = {
337         .read   = btmrvl_psstate_read,
338         .open   = simple_open,
339         .llseek = default_llseek,
340 };
341
342 static ssize_t btmrvl_hsstate_read(struct file *file, char __user *userbuf,
343                                                 size_t count, loff_t *ppos)
344 {
345         struct btmrvl_private *priv = file->private_data;
346         char buf[16];
347         int ret;
348
349         ret = snprintf(buf, sizeof(buf) - 1, "%d\n", priv->adapter->hs_state);
350
351         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
352 }
353
354 static const struct file_operations btmrvl_hsstate_fops = {
355         .read   = btmrvl_hsstate_read,
356         .open   = simple_open,
357         .llseek = default_llseek,
358 };
359
360 static ssize_t btmrvl_txdnldready_read(struct file *file, char __user *userbuf,
361                                                 size_t count, loff_t *ppos)
362 {
363         struct btmrvl_private *priv = file->private_data;
364         char buf[16];
365         int ret;
366
367         ret = snprintf(buf, sizeof(buf) - 1, "%d\n",
368                                         priv->btmrvl_dev.tx_dnld_rdy);
369
370         return simple_read_from_buffer(userbuf, count, ppos, buf, ret);
371 }
372
373 static const struct file_operations btmrvl_txdnldready_fops = {
374         .read   = btmrvl_txdnldready_read,
375         .open   = simple_open,
376         .llseek = default_llseek,
377 };
378
379 void btmrvl_debugfs_init(struct hci_dev *hdev)
380 {
381         struct btmrvl_private *priv = hci_get_drvdata(hdev);
382         struct btmrvl_debugfs_data *dbg;
383
384         if (!hdev->debugfs)
385                 return;
386
387         dbg = kzalloc(sizeof(*dbg), GFP_KERNEL);
388         priv->debugfs_data = dbg;
389
390         if (!dbg) {
391                 BT_ERR("Can not allocate memory for btmrvl_debugfs_data.");
392                 return;
393         }
394
395         dbg->config_dir = debugfs_create_dir("config", hdev->debugfs);
396
397         dbg->psmode = debugfs_create_file("psmode", 0644, dbg->config_dir,
398                                           priv, &btmrvl_psmode_fops);
399         dbg->pscmd = debugfs_create_file("pscmd", 0644, dbg->config_dir,
400                                          priv, &btmrvl_pscmd_fops);
401         dbg->gpiogap = debugfs_create_file("gpiogap", 0644, dbg->config_dir,
402                                            priv, &btmrvl_gpiogap_fops);
403         dbg->hsmode =  debugfs_create_file("hsmode", 0644, dbg->config_dir,
404                                            priv, &btmrvl_hsmode_fops);
405         dbg->hscmd = debugfs_create_file("hscmd", 0644, dbg->config_dir,
406                                          priv, &btmrvl_hscmd_fops);
407         dbg->hscfgcmd = debugfs_create_file("hscfgcmd", 0644, dbg->config_dir,
408                                             priv, &btmrvl_hscfgcmd_fops);
409
410         dbg->status_dir = debugfs_create_dir("status", hdev->debugfs);
411         dbg->curpsmode = debugfs_create_file("curpsmode", 0444,
412                                              dbg->status_dir, priv,
413                                              &btmrvl_curpsmode_fops);
414         dbg->psstate = debugfs_create_file("psstate", 0444, dbg->status_dir,
415                                            priv, &btmrvl_psstate_fops);
416         dbg->hsstate = debugfs_create_file("hsstate", 0444, dbg->status_dir,
417                                            priv, &btmrvl_hsstate_fops);
418         dbg->txdnldready = debugfs_create_file("txdnldready", 0444,
419                                                dbg->status_dir, priv,
420                                                &btmrvl_txdnldready_fops);
421 }
422
423 void btmrvl_debugfs_remove(struct hci_dev *hdev)
424 {
425         struct btmrvl_private *priv = hci_get_drvdata(hdev);
426         struct btmrvl_debugfs_data *dbg = priv->debugfs_data;
427
428         if (!dbg)
429                 return;
430
431         debugfs_remove(dbg->psmode);
432         debugfs_remove(dbg->pscmd);
433         debugfs_remove(dbg->gpiogap);
434         debugfs_remove(dbg->hsmode);
435         debugfs_remove(dbg->hscmd);
436         debugfs_remove(dbg->hscfgcmd);
437         debugfs_remove(dbg->config_dir);
438
439         debugfs_remove(dbg->curpsmode);
440         debugfs_remove(dbg->psstate);
441         debugfs_remove(dbg->hsstate);
442         debugfs_remove(dbg->txdnldready);
443         debugfs_remove(dbg->status_dir);
444
445         kfree(dbg);
446 }